I went to modity on the menu, where the 'paint script tool' lives and pulled up yhe options.

i left it at defaultbut went straight to 'setup' at the bottom of the tool box and wrote on the top line; 'geometryPaint' it is important that the syntax is correct. As soon as i hit return (OK) the second box came up, the little one next to the big one.

I wrote dinoscale in the top option where it says 'geometry' and checked all of the boxes below the sliders.